Xserver doesn't support XvPutImage to Pixmap?

[Michel Dänzer]

On Tue, 2010-02-16 at 14:17 +0200, Matthew Fincham wrote: 
> On 16-02-10 11:29, Michel Dänzer wrote:
> > On Tue, 2010-02-16 at 10:39 +0200, Matthew Fincham wrote:
> >    
> >> Currently I am using XvPutImage to display a video stream. The video
> >> needs to be overlayed with various items (pixmaps, text, custom
> >> drawing). As it stands there is a lot of flickering of the overlayed
> >> items. When this is double-buffered (using standard pixmaps) the
> >> flickering, obviously, goes away.
> >>
> >> I see that XVPutImage does not support writing to pixmaps, only to
> >> windows (xf86XVEnlistPortInWindow seems to be the start of the
> >> problem...). The system is running version 1.3.0. I have checked 1.7.1
> >> and seen that it too doesn't support XVPutImage to pixmaps.
> >>
> >> I have a few questions:
> >>
> >>   - has any progress been made in supporting XVPutImage with pixmaps?
> >>      
> > Somewhat:
> >
> > http://bugs.freedesktop.org/show_bug.cgi?id=2114
> Hi Michel
> 
> Thanks for the link. I have applied the patch (from Kusanagi Kouichi) 
> but only managed to crash the X server when writing to a pixmap. I 
> recompiled Xorg, the (Intel) drivers and the app using drawing the Xv image.
> 
> Afetr applying the patch should I expect to be able to write to pixmaps, 
> or have I done something wrong (left out a recompile or something else)!

As I mentioned in http://bugs.freedesktop.org/show_bug.cgi?id=21143#c7
the patch as it stands breaks the video driver ABI, so the video driver
needs to be rebuilt against the patched xserver. If that wasn't the
problem, please provide a backtrace of the crash.


-- 
Earthling Michel Dänzer           |                http://www.vmware.com
Libre software enthusiast         |          Debian, X and DRI developer